Department of Vibroacustic Hazards - Projects
Abstract

Modelling the acoustic parameters of workplaces that ensure speech intelligibility and perception of acoustic signals for people with a hearing dysfunction and for the blind.

Project manager: Paweł Górski M.Sc. (Eng.)

Project summary:

The aim of the project was to determine the requirements regarding the acoustics of workplaces in the context of ensuring speech intelligibility and perception of acoustic signals for people with a hearing dysfunction and for the blind, and to develop recommendations to make meeting those requirements possible.Within this project, a method was developed to determine the intelligibility of speech and orientation in space in people with a hearing or vision dysfunction. Models of workplaces with selected acoustic conditions were developed; they were validated. Simulations were conducted regarding the acoustics of workplaces to ensure speech intelligibility and perception of acoustic signals for people with a hearing dysfunction and for the blind. CARA software was used in modelling workplaces. On the basis of the studies a laboratory test stand was designed and developed for subjective tests of hearing directivity and speech intelligibility. The test stand was put in a laboratory; 5 acoustic adaptations were done to reproduce workplaces with various acoustic conditions.On the basis of the results of the analysis, and the simulation and laboratory tests, a recommendation was developed on acoustic adaptation. Also developed were recommendations for designers of workplaces regarding meeting the requirements for ensuring speech intelligibility and perception of acoustic signals for people with a hearing dysfunction and for the blind.



Unit: Department of Vibroacustic Hazards

Duration: 01.01.2008 – 30.12.2010